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Sectorisation of cellular radio

A radio and cellular technology, applied in the field of cellular radio antenna assembly operation, can solve the problems of reducing power level, reducing inter-cell interference, not allowing antenna installation, etc., to achieve the effect of improving matching

Inactive Publication Date: 2007-11-07
QUINTEL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Three- or six-sector antenna setups based on sectoral beamwidths of 120 or 60 degrees: (a) cannot be optimized to cover a line or rectangular grid of subscribers, and (b) have no angular supports , it is not allowed to install antennas on the sides of rectangular buildings
Moreover, reducing the power level to one sector to minimize inter-cell interference reduces the information processing capacity of such an installation without realizing that the resulting extra power is redistributed to another sector
Such an installation does not have several variable optimization parameters to optimize coverage, especially for non-uniform user spatial distribution or when the antenna support layout structure does not match the cell zoning requirements

Method used

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  • Sectorisation of cellular radio
  • Sectorisation of cellular radio
  • Sectorisation of cellular radio

Examples

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Embodiment Construction

[0047] Referring to Figure 1, a conventional prior art antenna assembly 10 has three sectors 12a, 12b and 12c with corresponding antennas 14a, 14b and 14c. Each antenna 14a, 14b and 14c has a horizontal beamwidth of 120 degrees measured to a point on the corresponding horizontal radiation pattern 16a, 16b and 16c (point 10dB below) where the antenna gain is 10dB with respect to the antenna line-of-sight gain the following. The radome 14a, 14b and 14c are mounted on respective vertical faces 18a, 18b and 18c of the gantry 20 of triangular section. Radiation patterns 16a, 16b and 16c are respective antenna coverage patterns. For comparison with the coverage provided by embodiments of the invention described later, a reference field strength line 22 (dashed line) is shown. Via feeders 24a, 24b and 24c, radome 14a, 14b and 14c communicate with respective base station sectors 26a, 26b and 26c, each sector having one or more ports.

[0048] An arrangement such as the arrangement ...

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PUM

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Abstract

An antenna installation (70) for cellular radio has four antennas ANT 1A, ANT 1B, ANT 2 and ANT 3 mounted on respective sides of a rectangular support 48 and giving rise to four antenna coverage sectors 1A and 1B and sectors 2 and 3. A splitter / combiner unit (SCU) receives three signals (1, 2 and 3) from a base station (42), and splits signal 1 into two signals 1A and 1B of equal power. The splitter / combiner 5C1 acts as a splitter in transmit mode and a combiner in receive mode. The signals 1A, 1B, 2 and 3 are connected to antennas ANT 1A, ANT 1 B ANT 2 and ANT 3 respectively. Split signal antennas ANT 1A, ANT 1B carrying the same transmit signal are not adjacent to one another: they are separated from one another by another sector associated with a different signal, and therefore do not overlap sufficiently to affect communications significantly. This avoids creation of signal. interference regions in antenna coverage areas which would lead to signals being partially unobtainable there.

Description

technical field [0001] The present invention relates to the sectorization of cellular radios, that is to say a device and a method for antenna installation operations of cellular radios using transmit / receive sectors. Background technique [0002] The use of cellular mobile radios (more popularly mobile phones) continues to expand and there is a demand for higher data rates (traffic throughput) from users which in turn requires additional antenna capacity. In contrast, however, the authorities responsible for planning or zoning are increasingly resistant to the creation of new antenna sites and even the addition of additional antennas to existing antenna sites. Therefore, operators of cellular mobile radio networks are using coverage improvement as a means of increasing traffic throughput, and are implementing it wherever possible, with antenna installations having low visible impact on the environment. Traffic throughput can be increased by (a) increasing bandwidth, ie: ad...

Claims

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Application Information

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IPC IPC(8): H04B7/04H04Q7/30H04W16/24
CPCH04B7/0491H04W16/24
Inventor P·E·哈斯克尔I·J·莱策尔L·D·托马斯
Owner QUINTEL TECH